*PREMIUM EXCLUSIVE NO WEB UNTIL 2230 BST 18TH AUG* Meghan Markle cradles baby son Archie in both arms as she leaves the luxury private jet she and Prince Harry have come under fire for using while claiming to be ‘eco warriors.’ The Duchess of Sussex, wearing a crisp white shirt and a stylish Panama hat, carefully clutched three-month-old Archie close to her chest as she exited the jet to join the Duke on the tarmac below. Amid tonight security, Harry, wearing a green polo shirt and blue cap, and Meghan climbed into a luxury limousine, with Archie Mountbatten-Windsor, to be whisked away from Nice Airport to continue their summer holidays. Harry, Meghan and Archie are believed to have stayed in a private villa, overlooking the Mediterranean, close to Saint-Jean-Cap- Ferrat, located at the heart of the French Riviera, between Nice and Monaco. It is the third time in three weeks the Duke and Duchess of Sussex have used a private jet. Harry, 34, arrived in the south of France after a week-long trip to the Spanish island of Ibiza, so American actress Meghan could celebrate her 38th birthday in style. They stayed for six nights in a luxurious private villa. They flew in on a Cessna 680 Citation Sovereign, bigger than the the nine-seater Cessna XL they took for their trip to the south of France, although both are believed to be operated by NetJets, a plane-sharing service for tycoons and the mega-rich. While it is not known who paid for the £20k round-trip to Ibiza, Harry’s millionaire pal Nacho Figueras is known to be a big user of NetJets — dubbed “the Uber for billionaires. “ The Spanish holiday came just days after Prince Harry attended Camp Google in Sicily, where he gave a speech about climate change to a group of celebrities, believed to include Leonardo DiCaprio, Naomi Campbell, Stella McCartney and Harry Styles. There he gave an impassioned speech about the environment and humanitarianism to a group of celebrities, many of whom stayed on luxury yachts